Schmitz, Sr., John Nathaniel

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  • El Paso, TX, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Dominoes with concealable spots

    • Patent number 4,257,611
    • Issue date Mar 24, 1981
    • Schmitz, Sr., John Nathaniel
    • John N. Schmitz
    • A63 - SPORTS GAMES AMUSEMENTS